Concrete-distributer.



J. F. ROBB & C. H. WAGNER. CONCRETE DISTRIBUTER.

. APPLICATION FILED AUG-18.1917. l,%88,999. Patented Dec. 24, 1918.

5 SHEETS-SHEET l.

llllllllllllllllHllIllllllllllllll l ll lly mm :iii

. H8088 & c. H. WAGNER.

CONCRETE DISTRIBUTER.

APPLICATION FILED Ami-2.1311317.

1,2,999, Patented Dec. 24,1918.

5 SHEETS-SHEET 2 J. F. ROBB & C. H. WAGNER.

CONCRETE DISTRIBUTER.

APPLICATION FILED AUG. I8. 1912.

Patented Dec. "24,1918.

5 SHEETS-SHEET 3.

J. F. ROBB & C. H WAGNER.

CONCRETE DISTRIBUTER.

APPLICATION FILED AUG. 18. 1911.

1388,9990 Patented Dec. 24,1918.

5 SHEEIS-SHEET 4 31402 n low J. F. ROBB (KL 0. H. WAGNER.

CONCRETE DISTRIBUTE-IR.

APPLICATiON FILED AUG. 18. I9i7.

Patented Dec. 24, 1918.

5 SHEETS-SHEET 5.

81400 vtlozd JOHN F. ROBB AND CHARLES H. WAGNER, OF WASHINGTON, DISTRICT OF COLUMBIA;

SAID WAGNER ASSIGNOR TO SAID ROBB.

CONCRETE-DISTRIBUTER.

To all whom it may concern: Be it known that we, JOHN F. R033 and CHARLES H. WAGNER, citizens of the United States, residing at Washington, in the Disof concrete in paving streets and roads 9.

portable plant is required, and is customarily used today, the same .taking the form,

of a combined mixing and distributing machine. The two best known and perhaps most universally used types of distributers at this time are those termed the boom and bucket distributer and the adjustable chute distributer, these distributers being each an attachment for-aportable concrete mixing machine and thus adapted for ready operation to convey the mixed aggregates from the mixing machine to the point of deposit upon the surface being constructed. The primary limitation against the use of the chute distributer is the distance to which the materials have to be carried since the chute distributer depends upon gravity for causing a flow of the matenals to the point where they are to be laid.

Having in view the fore 0mg itmay be observed, therefore, that it 15 customary today to use'the boom and bucket distributer and the chute distributer in different concrete laying operations, the two distributors Y being mechanically separate and distinct units in the form of attachments to concrete mixers. The distributers usually are or may be operated b the power driving means for the mixer itse f.

It is the object of our present invention to combine in a single distributing unit boom and bucket and adjustable chute distributing instrumentalities. With the above in view .we have redesigned the well known boom and bucket type machine with a view to ac- 'comlfi'odatin for the mounting thereon of a v sectional ad ustable chute. The boom and bucket andchute instrumentalities have common' features, as for instance the supporting Specification of Letters Patent.

Application filed August is, 1917. Serial No. 186,946.

furthermore united in such a way that they have a peculiar cooperation in respect to certain elements thereof, giving rise to an advantageous combination of the devices. One of the special cooperations between the chute and boom and bucket means resides in the formation of the former in such away that a section thereof may-constitute a chute element for feeding the materials from the mixing drum to the bucket When the boom and bucket attachment is being used, an arrangement made necessary by reason of the high mounting of the mixing drum according to the improvements hereof, a mounting not necessary for a boom andvb'ucket distributing attachment 3.10119.

By reason of the present improvements a single power plant, so to speak, is employed for a combined boom and bucket and distributing chute distributing unit, and the obvious result is the connection incident to elimination of a separate power unit necessary where the distributers are separate and distinct. Likewise it is apparent that by reason of the invention the two types of distributers combined may be alternatively placed in use very readily, admitting of concrete laying operations with a very high de- In the drawings:

Figure 1 is a side elevation showing a portable. concrete mixing plant equipped with the combined distributer of the type of the present invention;

Flg. 2 is an enlarged viewpartly in section showing more particularly the supporting means for the boom and chuteby which an axis is provided for these, parts and by which the driving cables for the bucket are guided;

Fig. 3 is a fragmentary view of the inner ends of the boom and the chute, the method f supporting the boom for vertical movement being clearly illustrated and certain of the parts being shown in section;

Fig.4 is a vertical sectional view taken about on the line 4-4 of Fig. 2;

Fig. 5 is a vertical sectional view taken about on the line 5-5 of Fig. 3;

Fig. 6 is a vertical longitudinal sectional view showing the chute upraised as when not being used but with its inner section positioned to direct the aggregates into the bucket when the boom and bucket distributingunit is in operation.

United States Letters Patent of E. H. Lichtenberg, No. 1,141,470,, dated June 1st, 1915, and Letters Patent to the same party, No. 1,178,326, dated April 4th, 1916, directed to a chute and boom and bucket type distributing units. The present improvements comprise primarily a redesign of the machines of the Letters Patent aforesaid whereby the two types of distributing units are capable of being employed in conjunction with one another as a single unit, practically speaking, so far as the attachment phase of the invention is concerned. Bearingin mind, therefore, that certain general parts of our improvements are well known, they will be referred to very briefly herein.

In the drawingsA denotes the mixing drum of a portable mixing machine the frame of which is designated B and has otfstanding brackets C. By the brackets C a hollow vertical trunnion 1 is supported and secured to this trunnion by being bolted or otherwise attached is the boom 2. The boom 2 is composed of spaced channels and is adapted to swing horizontally by rotative movement of the trunnion 1, and to swing vertically about pivots .3 which connect the channels'of the .boom with bracket members 4 that afford means intermediate the channels and the trunnion 1 to connect these parts. Any suitable raising and lowering means as the Windlass 5 and cables 6. similar to those of Patent No. 1.141.470 aforesaid may be used to change the elevationof the boom 2. There is mounted to operate longitudinally of the boom a carriage 7 the rollers of which move in the channel sides of the boom. The carriage 7 is propelled by a cable 8 which passes around the outer end of the boom and around pulleys 9' at the inner end of the boom, and under pulleys 10 suitably journaled on the hollow trunnion 1, all as seen best in Figs. 2 and 3 of the drawings. The cable 8 passes through openings in the sides of the trunnion 1 and upward through the hollow portion of the trunnion. Thereafter. the cable 8 winds about drums 11 on the frame B in the manner set forthin Li chtenberg Patent 1,141,470 aforesaid and Reissue Patent 13.617 to Philip Koehring, dated September 16, 1913.

The connection between the cable '8 and the carriage 7 isa movable member 12 se cured permanently to the cable 8 but adapted for relative movement respecting the carriagc 7 whereby to impinge and throw over a trip device 13 on the carriage, by Which trip device the bottom doors 14 of a bucket 15 are held closed. The opening and closing of the bucket 15 automatically and under the control of the cable 8 is practically the same as the general action of the parts as set forth in the Patent No. 1,141,470

aforesaid, there being provided a closing arm 16 connected with the trip means 13 and adapted to be impinged by a cam 17 stationary on one of the channels of the boom 2.

It may be noted also that certain automatic stop means such as shown in the Patent 1,141,470 will preferably be employed with this invention, the same being modified to the extent that the carriage 7 has a cam 7* thereon adapted to impinge the outer end of a lever 18 pivoted to the inner end of the boom 2 at 19. The innermost end of I.

the lever'18 is adapted to impinge a lug 20 on the sleeve 21 which fits within the trunnion 1 and is adapted to move vertically. The sleeve 21 has a head 22 at its upper end arranged to aetuatethe clutchcontrol lever or levers 23 whereby to unclutch the driving members from the drums 11 to dis continue movement of-the cable 8 and the bucket 15, all as well known at present in this art. The actuation of the parts 21 and 22 takes place as the carriage 7 reaches the inner limit of its movement after having been run out on the boom 2 for the purpose of dumping thebucket 15.

The turning of the boom 2 with the trunnion 1 as an axis is effected by meansof a worm 23 shown best in Fig-.3, the sameengaging an interrupted Worm wheel 24 integrally formed or otherwise carried by the trunnion 1. The worm 23 is turned by a handle 25 as customary.

Thus far we have set forth the general construction and operation of the boom and bucket distributing means of this invention.

The channels of the boom 2 are connected together by cross pieces 2. The cross pieces 2 are so located that a chute 26 of the type used' for distributing purposes in-this art is adapted to be received between the channels of the boom, partially housed in such position by 'said channels, and to be moved downward and upward into operative and inoperative positions respectively. The chute 26 is of the break joint ty e comprising sections jointed together. The inner end of the chute 26i pivoted to a feeding chute 27 of somewhat hopper-like form which chute 27 forms a device for receiving the mixed concrete aggregates from the drum chute 28, and feeding said aggregates to the The chute 26 being connected at points 31 and 32 with the chute. Intermediate its ends the cable .29 preferably passes around a differential take-up and let-out device'33, operable by a handle 34. The purpose of the device :33 is to cause the chute 26 tobe bodily raised as it is elongated by lowering of its sections into linement, and a converse operation of the parts.

- In View of the height of the drum A and the fact that according to thisinvention the bucket 15 is much lower than it ordinarily has to be mounted forthe purposes of a boom and bucket distributer alone, we refer to utilize the innermost section 26 of the chute 26 as a means for conducting the ucket attachment is in use the chute 26'- will be so adjusted that its innermost section 26' remains operative for the purpose above mentioned. 7

It'may be noted also that the bucket 15 is preferably detachably mounted on the carriage 7 as by means of hooks, 35 and set screws 36 so that the bucket may be dismounted from the carriage in the event the extent of adjustmentof the chute 26 makes the removal of the bucket desirable for [chute distributing purposes.

Having thus described our invention,

what we claim as new is: r

1. In a concrete distributing machine, the

combination with a boom and bucket distributer comprising a boom and a bucket and tributer comprising a boom embodying spaced beams and a bucket and meansfor operating said boom, of a distributing chute carried by the boom and movable into and out of the space between the beams.

4. In a concretedistributing mach1ne,'the

combination with .a boom and bucket distributer comprising a boom and a bucket and means for operating said boom of a distributing chute, and .means establishing, cooperation between V, said;distributel"; and... said chute, whereby-- 'they ,inay alterna tively put into operation.-

- 5. In a concrete distributing combination with a boom and bucket distributer. comprising a boom and a" bucket and means for operating said boom, of a point of deposit. 151. In a concretedistributingmachine the distributin chute and means to adjust the chute to distribute direct to a point of deposit.

6.' In a concrete distributing machine, the combination with a boom and bucket distributer comprising a boom and a bucket and means for operating said boom, of a distributing chute and means to adjust the chute to distribute direct to a point of deposit and to adjust the chute to supply material to the bucket aforesaid.

7. In combination, a material supply means, a boom and bucket distributer there-' for, a chute distributer therefor, and coiiperating means between the said two distributers b which one supports the other.

8. Y n combination, a material supply means, a boom and bucket distributer therefor, a chute distributer therefor, and means to adjust the chute to distribute materials from said supply means direct to a point of deposit, and to direct the materials to the bucket.

9. In combination, a material supply means, a boom and bucket distributer therefor, a chute distributer therefor, and means from said supply means direct to a point of deposit, the chute being of sectional construction and the sections thereof being relatively movable to direct materials from the' supply means direct to a point of deposit, or into the bucket to be carried thereby to the point of deposit.

uter and means for operating said boom, of a distributing chute carried by the boom,

and means to raise and lower the boom and chute supported thereon, and-means to adjust the chute independently of the boom.

11. \In a concrete distributing machine, the combination with a boom and'bucket distributer and means for operating said boom, of a distributing chute carried by the boom, and means to adjust the chute so that the same acts to feed material to the bucket.

12. In a concrete distributing machine, the

combination with a boom and bucket distributer and means for operating said boom, ofa distributing chute carried by-the boom, means to adjust the chute so that the same acts to feed material to the bucket, and

may dellver materials to a point of deposit independently of thebucket.

means to move the bucket whereby the chute 13. In a concrete distributing machine, the

combination with a boom distributing device, a chutedistributing device, and means whereby to 'efl'ect delivery of. materials by the ohutedevice to. the boom, device, and deliverj action of the chute other than to the boom device such as directly to a suitable combination of a boom, a bucket adapted to traverse said boom and operating means for said bucket, a chute mounted on the boom, and means to operate said chute to position the same for use or in an inactive position not interfering with the traverse. of the bucket on the'boom.

15. In a concrete distributing machine the combination of a supply chute, a horizontally swinging boom carrying said chute, a bucket adapted to traverse said boom and to receive materials from said supply chute, and a distributing chute carried by the boom and adapted also to receive materials from the supply chute.

16. In a concrete distributing machine the combination of a supply chute, a horizontally swinging boom carrying said chute, a bucket adapted to traverse said boom and to receive materials from said supplychute,

a distributing chute carried by the boom and adapted also to receive materials from the supply chute, and a supporting trunnion for the boom forming a vertical axis for its swinging movement, said trunnion passing through said supply chute.

17. In a concrete distributing machine, the combination of a boom, a vertical trunnion ofhollow formation supporting said boom for horizontal swinging movement, a bucket adapted to traverse the boom,-- cable driving means for the boom, stopping mechanism for said driving means, and means for actuating said stopping mechanism comprising member mounted in the hollow portion of the trunnion, and a part operable with the bucket to actuate-said member.

18. In a concrete distributing machine, the combination of a supply chute, boom and bucket distributing means associated therewith so that the bucket is adapted to receive materials from said supply chute, chute distributing means also associated with the supply chute and arranged to receive materials therefrom, and means whereby to render the boom and bucket distributing means and the chute distributing means interchangeably operative.

19. In a concrete distributing machine, the

combination of a supply chute, boom and bucket distributing means associated therewith so that the bucket is adapted to receive materials from said supply chute, chute dis,- tributing means also associated with the supply chute and arranged to receive materials the chute distributing means interchangeably operative, the chute distributing means including a member cooperative with the chute therefor, an attachment for said mixer embodying a unit composed of boom and bucket distributing means and chute distributmg means, means to conduct materials 56 therefrom, and means whereby to render the boom and bucket distributing means and supply chute and bucket when the boom and v from said discharge chute to either one of i said distributing means, and a trunnion supporting said unit for horizontal swinging movement, and said conducting means embodying a supply chute adapted to turn with the boom and bucket means, supported by the boom and constructed to remain in operative relation in respect to the discharge chute. at whatever adjustment the boom and bucket means may take in its horizontal swinging movement.

- In testimony whereof we afiixour signatures.

' JOHN F. ROBB.

CHARLES H. WAGNER. 

